# ASB No. AS365-25.01.18

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### Civil version(s): N, N1, N2, N3 Military version(s): F, Fi, K



# ALERT SERVICE BULLETIN

SUBJECT : EQUIPMENT AND FURNISHINGS - Pilot and co-pilot seats

Inspection of the rear beam of the seat

Revision No. Date of issue

Revision 0 2012-05-14

Revision 1 2012-08-09



### Summary :

The purpose of this ALERT SERVICE BULLETIN is to ch eck that there are weld beads on the rear beam of the pilot and co-pilot seats.



### Reason for last Revision :

The purpose of the last revision is to replace in the appendix EADS SOGERMA Inspection Service Bulletin No. 2510106-25-888 Revision 0 with EADS SOGERMA Inspection Service Bulletin No. 2510106-25-888 Revision 1, which requires an additional check of all welds of the rear beam of the seats.



### Compliance :

Compliance with this ALERT SERVICE BULLETIN is mandatory. For the attention of

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### 1. PLANNING INFORMATION

1.A. EFFECTIVITY

1.A.1. Helicopters/installed equipment

On helicopters equipped with pilot and co-pilot seats part number (MP/N) 2510106-03-00 or 2510106-06-00 with serial number (S/N) between 720 (inclusive) and 1451 (inclusive) and on which compliance with EADS SOGERMA Inspection Service Bulletin No. 2510106-25-888 Revision 1 has not been

ensured.

1.A.2. Non-installed equipment

On pilot and co-pilot seats part number (MP/N) 2510106-03-00 or 2510106-06-00 with S/N between 720 (inclusive) and 1451 (inclusive) and on which compliance with EADS SOGERMA Inspection

Service Bulletin No. 2510106-25-888 Revision 1 has not been ensured.



### 1.B. ASSOCIATED REQUIREMENTS

Not applicable.



### 1.C. REASON

Revision 0 :

During a maintenance inspection, it was found that a we ld bead was missing on the rear beam of a seat. This non-conformity, if not detected and corrected, coul d lead to crew injury in case of helicopter hard landing.

EADS SOGERMA requires that the pilot and co-pilot seat s be inspected to make sure that there is a weld

bead on the rear beam of the seat. This inspection is necessary to make sure that the se ats are serviceable and comply with the flight safety

rules.

Consequently, EUROCOPTER renders compliance with EADS SOGERMA Inspection Service Bulletin No. 2510106-25-888 mandatory, through this ALERT SERVICE BULLETIN Revision 0.

This ALERT SERVICE BULLETIN Revision 0 will form the subject of an EASA Airworthiness Directive.

Revision 1 :

During compliance with Revision 0 of this ALERT SE RVICE BULLETIN, it was found that a weld bead was missing on another part of the rear beam. This non-conformity, if not detected and corrected, could l ead to flight crew injury in case of helicopter hard landing.

The purpose of the last revision is to replace in the appendix EADS SOGERMA Inspection Service Bulletin No. 2510106-25-888 Revision 0 with EADS SOGERMA Inspection Service Bulletin No. 2510106-25-888 Revision 1, which requires an additional check of all welds of the rear beam of the seats.

The purpose of Revision 1 of EADS SOGERMA Insp ection Service Bulletin No. 2510106-25-888 is to add information to the operating procedure and to add photos showing new areas to be checked.

Revision 1 affects compliance with Revision 0 of this ALERT SERVICE BULLETIN.

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### 1.D. DESCRIPTION

Compliance with this ALERT SERVICE BULLETIN Revision 1 consists in extending the check for the weld

bead to the whole of the rear beam of the seat in accordance with EADS SOGERMA Inspection Service

Bulletin No. 2510106-25-888 Revision 1.



### 1.E. COMPLIANCE

1.E.1. Compliance at the works

Helicopters/installed equipment :

Comply with paragraph 3. of this AL ERT SERVICE BULLETIN before delivery.

Non-installed equipment :

Comply with paragraph 3.B. before delivery.

1.E.2. Compliance in service

The work on the helicopter is to be performed by the operator.

Helicopters/installed equipment :

- Comply with paragraph 3. of this ALERT SER VICE BULLETIN within 50 flying hours or 3 months

, the first

limit reached is applicable, following receipt of this ALERT SERVICE BULLETIN Revision 1, issued on the date indicated at the bottom of the page.

- If a weld bead is missing, according to the location, replace the beam or the seat within 50 flying hours

or 3 months, the first limit reached is applicable, following receipt of this ALERT SERVICE BULLETIN
Revision 1, issued on the date i ndicated at the bottom of the page.



### NOTE

In order to have sufficient time to replace a seat if necessary, before reaching 50 flying hours or 3 months, EUROCOPTER recommends that you perform the check at the first opportunity, in order to inform SOGERMA as quickly as possible of any non-compliance of the seat.

Non-installed equipment :

Comply with paragraph 3.B. before installation on the helicopter

, without exceeding 3 months following receipt of this ALERT SERVICE BULLETIN Revision 1, issued on the date indicated at the bottom of the

page.

If the weld bead is missing, the insta llation of this seat is prohibited.

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### 1.F. APPROVAL

Approval of modifications :

Not applicable.

Approval of this document :

The technical information contained in this AL ERT SERVICE BULLETIN Revision 0 was approved on May 11, 2012 under the authority of EASA Design Organization Approval No. 21J.056 for helicopters of civil versions subject to an Airworthiness Certificate.

The technical information contained in this AL ERT SERVICE BULLETIN Revision 0 was approved on May 11, 2012 under the prerogatives of the recognit ion of design capability FRA21J-002-DGA for French Government helicopters.

The technical information contained in this AL ERT SERVICE BULLETIN Revision 0 was approved on May 11, 2012 by the EUROCOPTER Airworthine ss Department for export military versions.

The technical information contained in this AL ERT SERVICE BULLETIN Revision 1 was approved on August 09, 2012 under t he authority of EASA Design Organization Approval No. 21J.056 for helicopters of civil versions subject to an Airworthiness Certificate.

The technical information contained in this AL ERT SERVICE BULLETIN Revision 1 was approved on August 09, 2012 under the prerogatives of the recognition of design capability FRA21J-002-DGA for French Government helicopters.

The technical information contained in this AL ERT SERVICE BULLETIN Revision 1 was approved on August 09, 2012 by the EUROCOPTER Airworth iness Department for export military versions.



### 1.G. MANPOWER

EUROCOPTER recommends that compliance with this ALERT SERVICE BULL ETIN is ensured by personnel qualified as follows: Qualification: - 1 Mechanical Engineering Technician.

The time for the operations is given for information purposes, for a standard configuration. Time for the operations: Approximately 10 minutes to per form the check in accordance with paragraph 1.G. of the appended EADS SOGERMA Inspection Service Bulletin

No. 2510106-25-888 Revision 1. Approximately 1 hour to replace a seat.



### 1.H. WEIGHT AND BALANCE

Not applicable.

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### 1.I. EFFECT ON ELECTRICAL LOADS

Not applicable.



### 1.J. SOFTWARE MODIFICATION EMBODIMENT RECORD

Not applicable.



### 1.K. REFERENCES

Refer to paragraph 1.J. of the appended EADS SOGE RMA Inspection Service Bulletin No. 2510106-25-888

Revision 1.



### 1.L. DOCUMENTS AFFECTED

Not applicable.



### 1.M. INTERCHANGEABILITY OR MIXABILITY OF PARTS

Not applicable.

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### 2. MATERIAL INFORMATION

2.A. MATERIAL: PRICE - AVAILABILITY - PROCUREMENT

Refer to paragraph 2.A. of the appended EADS SOGE RMA Inspection Service Bulletin No. 2510106-25-888

Revision 1.



### 2.B. INFORMATION CONCERNING INDUSTRIAL SUPPORT

Not applicable.



### 2.C. MATERIAL REQUIRED FOR EACH HELICOPTER/COMPONENT

Refer to paragraph 2.C. of the appended EADS SOGE RMA Inspection Service Bulletin No. 2510106-25-888

Revision 1.



### 2.D. MATERIAL TO BE RETURNED

Return the material to the following address:

EADS SOGERMA

Z.I. de l’arsenal

BP.60109

17303 ROCHEFORT CEDEX

France

Tel: +33 (0)5.46.82.84.84 Fax: +33 (0)5.46.82.88.13

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### 3. ACCOMPLISHMENT INSTRUCTIONS

3.A. GENERAL

Not applicable.



### 3.B. OPERATIONAL PROCEDURE

Comply with paragraph 3. of the appended EADS SOGERMA Inspection Service Bulletin

No. 2510106-25-888 Revision 1.



### 3.C. IDENTIFICATION

Identification of this document :

Record compliance with this ALERT SERVICE BULLETIN Revision 1 in the helicopter documents.

Identification of modifications on the equipment :

- If ALERT SERVICE BULLETIN Revision 0 was al ready applied, add “REV 1” at the end of

“ISB 2510106-25-888 applied”.

- If ALERT SERVICE BULLETIN Revision 0 was not app lied, comply with paragraph C. IDENTIFICATION of

appended EADS SOGERMA Inspection Service Bulletin No. 2510106-25-888 Revision 1.



### 3.D. OPERATING AND MAINTENANCE INSTRUCTIONS

Not applicable.



### 4. APPENDIX

Appended EADS SOGERMA Inspection Service Bullet in No. 2510106-25-888 Revision 1 in English.

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